as per the forum post, this xorg.conf helps, is see no more corruption and no errors so far in Xorg.0.log:
Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" 0 0 EndSection Section "Monitor" Identifier "Monitor0" EndSection Section "Device" Identifier "Card0" Driver "intel" BusID "PCI:0:2:0" Option "DebugFlushBatches" "on" Option "DebugFlushCaches" "on" Option "DebugWait" "on" EndSection Section "Screen" Identifier "Screen0" Device "Card0" Monitor "Monitor0" SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection -f -- has a room temperature iq.